Apparatus for inserting



I. UNITED STATES PATENT OFFICE.

` y VALTER S. Sl-IIP, OF BROOKLYN, NEV YORK.

APPARATUS FOR INSERTING, FINISHING, AND SECURING SPUTSIN BOlLl-IRS.l

SPECIFICATION formngpart of Letters Patent No. 521,825, ydated June 26., 1894.

Application filed J' une 19.1893.

To all whom t may concern,.-

Beit known that I, WALTER S. SHIPE, a citizen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Processes of and Ap-l paratus for Inserting, Finishing, and Securing Sputs, of which the following is a specification. Y Y f This invention relates to certain new and useful improvements in process of, and apparatus for, inserting, finishing and securing sputs in'boilers, and has for its object the production of a tight and non-leakable joint between such sput and the boiler, and further to finish such sputs so that their internal diameter will in all cases be even and uniform. To these ends, therefore, my said invention consists in making each sput punch its own hole in the boiler sheet, and placing the edge of the hole so cut in clamping relation to the sput, in one operation, and in coring out the .internal diameter of said sput to uniform size, and swaging the same over the boiler sheet, in'a second operation, and tools or apparatus for performingl such opeations, allas hereinafter more particularly,described and pointed out in the claims.

Referring to the accompanying drawings, ,in the several figures of which like parts are similarly designated, Figure 1, is a vertical cross-section, showing the male'y and female dies, a boiler sput and a fragmentof a boiler sheet, just previous to the first operation.y

"Fig. 2, is a similar` view, showing the form of plunger or male' die I prefer to use for the second operation; and Fig. 3, is a sectional view of a sput inserted in, and secured to, a fragment of a boiler sheet, after the operations have been completed and ,the sput tapped to receive the pipe connection.

j The sput I prefer to use in carrying my said process into effect, is shown and described in a concurrent application, filed by.

ine June 10, 1893, Serial No. 478,140, but I do not desire to limit myself to the use of said sput in practicing this invention, as, obviously` changes and alterations may be made therein, without departing from the principle and scope of niy present invention. As shown in said application, Serial No. 478,140, the split consists of a base flange u, provided Serial No. 478,141. (Notmodel.)

d with the annular groove b, the opposite walls '6, d, of which are reversely inclined or tapered, and a. tubular projection e.. These sputs are commonly of soft malleable cast ings, and usually vary considerably in size, owing to the different degrees of shrinkage, to the lopping of the pattern by different molders, and to more .or less of the metal being worn away during the rattling operation, and in practice the holes in the boiler sheets are commonly made of a size to fit the larger eastings, and are consequently too large to make a tight fit with the smaller sputs.

To insure 'an absolutely tight jo nt,vand make the hole of proper size to receive its sput, I make each sput punch its own hole through the sheet, and I accomplish this in the following manner, reference being had to Fig. 1, wherein f, is a .female die having a central opening f of ia size to admit the plunger to be used, and having also aconcentric circular depression ory recess, within which the base flange a, .ofthe sput rests, and which prevents the metal thereof from spreading or tearing,during the subsequent operations, fand' also assists in making a sharp angle in the boiler sheet, as hereinafter explained. On the top of projection e, of the Se I sput, I new place the boiler sheet g, in the Y location where it is desired'to insert the sput, and subject said sheet to the action of the at the top than elsewhere, and adapted to admit the walls of projection e, of thevsput. The said plunger has also an annular cutting and forming edge j, and the nose or projec- Y tion k, in advance thereof. As the plunger descends, the nose 7c, first comes in contact with the boiler sheet g, over the sput,'and imparts to the saine a great'tensile strain, forcing said sheet4 at the said point, downward Within .the sput,in the shape of aheinisphere, as shown by dotted lines, Fig. 1. On account of the strainj ust described, the sheet g, yields readily to the cutting or punching operation, which is performed bj1 cutting edge j, of the plunger, and the outsideof tubular projection c, of the sput, and said strain enables me to punch the heavy sheet over the soft casting of the sput, while the nose 7c, andthe -lieinisplierical portion of said sheetwithin lthe IOO g`riie-spin, prevents' are sput,brace thewalls of projection c, preventing them from losing their shape, and being distorted during the shearing operation, while the diameter of the circular punching of sheet g, within the sput is so reduced by the nose k, that it'readilylfalls out fromthe upper die upon the up-stroke. As soon as the opening has been punched in `sheet g, as described, the edge j, of plunger h, forces thesheet downwardly and into the annular groove b, of the sput, impartingto the edge of the circularaperture inlisad sheet4 an annular circularnde.M pression or flange g', Fig. 2. As stock ofthe sheet g, is taken upin forming the angleg and 1 5 therebydraws theedge ofthe circular aperture in said sheetraway fromftubular` projection `e, of the sput, said sput would be quite loose in the sheet, were it not tory'the incline d, which compensates for the stocliftaken up, and also zo assists in making the sharp anglein the sheet atvg. The sput and sheet ,are new in the condition illustratedin Fig. 2, andjare ready for the second operation, which consists in punching or coring out the internal `diameter of the sput to' a. uniform and even size, and in swaging the metal of tubularprojeetion e, of the sput withinthe annular flange or depression g', of `the` boiler sheet.' For this operation I prefer to use the same female die, while the male die l, 'consists of thep'lun ger m, the upper portion fn, of which is outwardly flared or taperedf andy terminates in* the forming or finishing groove o. Upon the .descent of this die, theplungeriic,"enterslthe sput` and` shaves or cutso,` a-llsand a'ndother irregularities resulting fln thecastinigoperf ation,and ceres out the diameteriofsa dfspnt i to aunifor'm and even s"zle.`""`lsitlleiliefiir-V theridescends' and ythe inclnedportionz", of the diei, enters "the tubular projection c,`it spreads the metal of the said projection e, out ward, and the forming or nishingliead o, .coming in contact with metal projection c, completes the` operation and forces or swages 45 said 4metal into the annular groove orgliange' i @niiet the boiler ,Sheet n, leaving the Work es `Slioirii ljjlFig. j 34 eo1npleted,lI andH the l sputl e really l0 be tapj'red4 1to receive *the lpipeenll) ripetitive-1. It nillbeapparnt that) "Lf'insthii 59, operation, the` `rnetfftl `of the spnt "i`s` prevented losing'its'sha e by ythe reinferoe:nientor plus' per, n D, eine irre' fu nimeer fn-jonrspreadingto theeenfterjor losing its shape. e Itwill ,also be apparcntlifiiom!thef foregoing; j that I ani enabledto'lhavestock of the spilt j ,onthe outside ofthe boiler sheet equal in ie dief, while'lthe i 6e thicknessl tothat Lupon "the*inside-that' the outer portion efthespuuwhen finished, forms laL circular Wall of uniform tl1iekuess^,`and that x wagingftlje upper part ofpontione, `Wit-h-` I` j r,Lefa'nnular depressintermed linlthe hoil" ensheet, the metal `,is made more dense `than j iflnotso-eonfinod, but was allo'x d to spread,

infini; .W

in which case `the circuin terence pti' the sput Lwould beliablelto splitfolr era" f As before stated, I do not desire to confine myself toithe particular form of sput and tools here shown, and described, the gist of :the invention lyingl in nj'iking each sput the die for euttngitsoivn' hole in the boiler sheet, and in clamping the metal of the spul; around therlmetal; of; the.:` boiler sheet, with sufficient metal on both sides of sheet to insure the requisite strength and at the same timepbe prac eallyjlllh thel er surface. \Vhat1 c as nei and de 1re to secure by' Lettersllatenty isl. The herein described process of insert ing and securingsputsinand torhoiiers,wlrich consists "'inr loeatiiigfthe;lspntr tous tlre`,boi1er 1 sheet, forelngrarpontiomof;Suclllldillllln 1 the sput andiisingeachsputras dada' ltopiunch itshole inl the boler isheemiand,thereclajmpv `ing or swaging the metal `olithesput around Tsaid sheet, substantially asidescnibedu :j f 2; The herein ldeseribedn process lots ,insert- -ing and securing sputs in and to boilers,wh,ich consists infloeating the sputum` 'fthej'boilee sh'eet, forcingaportion ofiY saidrlsllect within l`saidsput, punchingianbpening in'gthe, sheet vte receiveithesput,A and ,thenlsrvaging on compressing` 'dief metallica-nien spur wenn the opening; in fthei sheet; substantiilll .=l. .,i. ai? i tlfjlll, i .i `3.` Theeprocesslowinser ing; fin shingf ,and securing spnts in boiiersmvhichconsists in using eacllgsputzasgazfd ie'toipugnch fits, hole m `theiboiier` sheet; thenleoringioumhe gintepnal diameter of ,xsaidnsplutaand-ithenfsivaging or `mpressing` ther metall:tbeneofearoundethe p ening inutile lboilerrsheeh:Substantially as delscrlbedafu ,in einigem: lim; e i l ""4: Tiie processiroftinscntng: @1141.S9ll11l3g sputs of the `construction idescribedpinviboil- -ersfwhich consists imusingeachfspntasa die to punch its hole in the boiler sheet; then vforeing the edges ofsaid:sheet,withinanannular `groove in thebaselot said,l sputwiinparting.to such sheetlan anlnularfangulan flangeorj de- "pressioiuanrlethen swaginger compressing the i"rrnai'fai ofi lthezsputaintoi said; flange, nrjdepression in the-sheet,substantiallyas described. wird. The lp'rocess1 oldinsertng, ,:flnish gigan'd 1 securingspntslof the eonstnuetionde ribe'd,

fffirran annularfgreoirejinthe basent lsput,

flange' or j, depressougin f onel j eration, and then corlng out,the,internaldiameteret the i sput to n ni form xsizcandswagin orleonipiessing the metal of saidwsput into thetlapgepr `:depression in the shectgin;anotheroperalion, substantially as descrihedg f (i. In an apparatusyforiuserting,seeming vand iinshingin ihoilor sheets, sputslhaving a base, afgroovc therein n:mit a tubular, pl-ojeci tion, the coinbinationvol a rcceptaelel'or the IOO imparting to said shectfaijiannnlam angular j pering portion, and a forming or finishing groove, substantially as described.

Signed at Brooklyn, in the county of Kings and State of NewYork, this 16th day of June, A. D. 1893.

WALTER S. SIIIPE.

Witnesses:

MORRIS LERENS, WILLIAM H. G. OsBoRN. 

